Premium
Triangular Nanoplates of Silver: Synthesis, Characterization, and Use as Sacrificial Templates For Generating Triangular Nanorings of Gold
Author(s) -
Sun Y.,
Xia Y.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200304652
Subject(s) - materials science , template , aqueous solution , transmission electron microscopy , nanotechnology , silver nanoparticle , galvanic cell , characterization (materials science) , single displacement reaction , nanostructure , nanoscopic scale , nanorod , sodium citrate , chemical engineering , colloidal gold , nanoparticle , metallurgy , organic chemistry , chemistry , medicine , pathology , engineering
Triangular nanoplates of silver are prepared by irradiating aqueous dispersions of spherical silver colloids with visible light in the presence of both poly(vinyl pyrrolidone) and sodium citrate. These silver nanoplates serve as sacrificial templates to generate triangular rings of gold (see transmission electron microscopy images in Figure) through a galvanic displacement reaction between silver and aqueous HAuCl 4 solutions.